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third party inspection service
Hardware Inspection
product inspection service
Inspection standards and testing methods for hardware
The sampling standard is based on GB/T 2828.1-2003 Class II level one-time sampling scheme
Critical defect (CR)AQL=0; Major defect (Maj)AQL=0.65; Minor defect (Min)AQL=1.0.
Sample plan and limit sample: The text is difficult to describe clearly or it is difficult to determine the appearance of unqualified defects, the customer shall provide the acknowledged sample and illustrative pictures for inspection as a basis.
Inspection/test environment
CASEASE
1 m to 1.5 m
30 to 45 degrees
500 ~ 1000 LUX
Visual distance: 30 cm
Indoor temperature: 25℃±5℃
Brightness: 500 ~ 1000Lux
Visual condition: normal visual acuity, 1.0 or above;
(Look back and forth on each surface for 10 seconds)
Position: The product is placed 30cm in front of the inspector, the inspector is 45±15 degrees in the product (that is, the standard sitting position of visual personnel, the machine is placed flat on the workbench); Scanning time: 10 seconds/time/surface
Inspection of hardware
Definition of bad categories
A serious shortcoming
Critical Defect A critical defect which, based on judgment and experience, shows that a dangerous or unsafe result may occur to the person using the product.
The Lord wants something missing
Major Defect refers to a defect other than a serious defect that may result in a defect or defect or substantially degrade the performance of the product so that the desired goal cannot be achieved.
The second point is missing
(Minor
Defect Secondary defect refers to a defect where the product's usability may not substantially reduce the desired purpose or where the defect differs from established standards but has no significant impact on the product's use and operational effectiveness.
List of plastics inspection: (Refer to the rules of judgment for details)
NO. Test fixture for project inspection content
Bad judgment
CRMajMin
1. Defects of appearance inspection (see detailed rules of judgment standard for details) :
Side A: Grade B (≤0.1mm^2)
Two points are allowed on one side, and the distance between points is not less than 100mm.
Side B: Grade C (≤0.2mm^2)
A). Two points are allowed on one side, and the distance between points is not less than 100mm.
B). If the point is less than 0.1mm^2, 3 points are allowed on one side, and the distance between points is not less than 100mm.
C). If any point on one side is greater than 0.1mm^2, it is applicable to project a.
Surface C: D grade (≤0.3mm^2)
A). Two points are allowed on one side, and the distance between points is not less than 50mm.
B). If the point is less than 0.2mm^2, 3 points are allowed on one side, and the distance between points is not less than 50mm.
C). If any point on one side is greater than 0.2mm, it is applicable to item a. Visual inspection, fixture: stain card
Spot defects include: bubbles, stains, paint particles, spotty impurities, paint removal, dents, etc
Thread-like impurities
Side A: length ≤3mm, quantity as above;
Side B: length ≤5mm, quantity as above;
Side C: length ≤8mm, quantity as above. Black mark card
Insensitive scratch (width ≥0.08mm)
Side A: length ≤6mm, quantity as above;
Side B: length ≤12mm, quantity as above;
Side C: length ≤20mm, quantity as above. Black mark card
Sensible scratch (width ≤0.08mm)
Side A: area 0.5mm ^2, the quantity is the same as above;
Side B: area 1.0mm ^2, the quantity is the same as above;
Side C: Area 1.5mm ^2, quantity as above. Black mark card
Raw edge:
Side A ≦ 0.1mm
B side ≦ 0.2mm
Surface C ≦ 0.3mm gauge
Bending deformation:
In general:
LCD BACK allows external convex (not concave),
The HINGE COVER allows both ends to turn up.
But no matter what kind of deformation, its deformation is not more than 3/1000 marble platform, feeler
Art Line:
The separation is required to be clear, and no heterochromatic inspection is allowed in the slot of the art line
2 Dimensions Refer to EER
Key control sizes include :LOGO slot, long and wide LOGO slot sizes of plastic parts must meet the requirements (focus on following up the product return);
The other size is mainly composed of real, pay attention to the gap, break difference problems.
3 Color difference Color difference value: The value must meet ΔE+-1.0
The surface of the paint layer of plastic parts should be smooth, uniform color difference meter, standard color plate
4 Reliability test hardness:
The hardness of the coating layer is measured according to GB/T
In the mechanical method of 6739, the Mitsubishi Uni pencil is about 45° with the horizontal plane, the pressure of the tip is 500g/cm2, and the paint layer of the sample is pushed and pressed, and the speed of about 1cm/s is about 1cm ~ 3cm to scratch on the coating. For each stroke, grind the lead and repeat at least five strokes with the same hardness pencil. Film pencil hardness scratching instrument
The corresponding size of pencil
200 mesh sandpaper
No residual scratches and damage is qualified
Adhesion:
To determine the adhesion of the coating layer, use a sharp utility knife to mark a straight line on the surface of the coating layer at a 1mm parallel distance (cut through the coating at one time) in a checkerboard shape, and make a 3M610-1PK adhesive tape (tensile strength: 5.0)
N/mm; Metal bonding force: 0.5
N/mm; Elongation at break: 15%) tightly attached to the film surface, can be rolled three times with a rubber roller. Place for 30 seconds, and then pull up the stripping adhesive at a speed of 0.6 ~ 1.0m/s at a 90° Angle. Fixture:
Utility knife, hundred box knife
3M610-1PK type adhesive tape
No flake shedding phenomenon is qualified
Resistance to friction:
Use EF74 eraser to wipe 200 cycles with a force of 500g/cm2 and a speed of 50 cycles /min at a distance of 3cm. Fixture :EF74 eraser
Not exposed plastic substrate is qualified
5 Other copper nuts
The height of the copper nut (the distance between the copper nut and the BOSS surface) shall not be higher than that of the BOSS surface and shall be 0.05-0.15mm lower than that of the BOSS surface
It is necessary to pay attention to the occurrence of leakage melting and melting of wrong nuts.
Tension value and torque value of copper nut
M1.6: tension value ≥10kgf, torsion value ≥3kgf;
M2.0: tension value ≥15kgf, torque value ≥4kgf;
M2.5: tension value ≥25kgf, torsion value ≥5kgf; Tension meter, torsion meter
(This test should be performed if PL finds a nut drop event)
The pull torque value varies with the manufacturer. If the EER value is specified, use the EER value
6 Package check whether there is a delivery label, GP label and whether the label content is clear, complete and correct eye inspection
Note whether there are incoming materials before and after mold modification between the same batch
Confirm whether the outsourcing has any damage and collision marks (pay special attention to the four corners)
Whether there are mixed materials, wrong materials, short loading phenomenon
6. List of inspection for hardware (refer to the rules of judgment for any details)
NO. Test fixture for project inspection content
Bad category
CRMajMin
1 Appearance check whether there is dirt, oil stains, oxidation phenomenon visual inspection, do not need to paste, allow the existence of anti-rust oil
Whether the material, thickness and surface treatment process are the same shall be compared with the sample. No difference or slight difference can be accepted
Deformation of stamping parts
After placing the product on the platform, the 4 corners are on the same plane; Or 3 corners of the ground, one corner up ≤1.0mm. Common deformed materials are :HDD support; TP SUPP, etc
The acceptable degree of deformation shall be based on no mechanism interference and no assembly clearance.
Body has no pollution, foreign body, riveting is correct eye inspection
Whether the size is in conformity with the specification (IQC shall check the size marked in the acknowledgement letter, and IQC shall record 6 data for each size of each feed) practical assembly
3 Reliability test salt spray test visual inspection
5% concentration brine immersion test
The test of HINGE is completed by the test department when necessary
4. The supplier shall provide special fixture for measuring when necessary, such as bending Angle and maximum Angle of HINGE
5 Package check whether there is a delivery label, GP label and whether the label content is clear, complete and correct
Note whether there are incoming materials before and after mold modification between the same batch
Confirm whether the outsourcing has any damage or collision marks
There is no mixing material, wrong material, short load
Pre-production Inspection (PPI)
100% inspection (Full Inspection)
When the merchandise is 100% completed, we will check the quality of goods unit by unit, which covers product description, style &color, workmanship, quality, function, label, package, size measurement if available etc, to make sure 100% of the goods meet your specified quality requirement. Note: for those products of high value or complicated internal structure, we suggest to take full inspection.Container Loading Supervision (CLS)
Before loading, our inspector will check products' information, qty, package, during the course of loading, our inspectors will keep closely look at the loading process, ensure that the export cartons are well arranged in the container with no risks of deformation, collapse, help manufacturer finish loading under correct and clear working clauses and working process. In general:Random Inspection
(Pre-production Random Inspection, During Production Random Inspection, Pre-shipment Random Inspection) As per customer's quality requirement, we will sample the products according to international or other standards to inspect the packing, appearance, color, size, function, safety, etc.What do our QC inspectors (quality inspector) do for the inspections ?
1. Confirm the quantity of the products.
2. Confirm the packing detail information of the products.
3. Check the information or marks reqiured by clients, such as the information on the carton, information on gift box, information
on products, warning text and all the others.
4. Check the overall appearance of the product.
5. Check the conmponents of the products.
6. Perform the general tests.
(1) General function test.
(2) Dimension of packing or products.
(3) Gross weight or net weight.
(4) Carton drop test.
(5) Barcode number test.
8. Any other work that clients want us to do during the inspection.
1.Why do I need shipment inspections or factory audits?
In case of any Poor quality, incorrect shipments, unreal information from suppliers. Inspection is the most efficient way to protect buyer’s right.
Getting a rapid quotation should have a complete condition,such as gross weight size,quantity and where is the factory and where will it ship to."
Inspection standards and testing methods for hardware
The sampling standard is based on GB/T 2828.1-2003 Class II level one-time sampling scheme
Critical defect (CR)AQL=0; Major defect (Maj)AQL=0.65; Minor defect (Min)AQL=1.0.
Sample plan and limit sample: The text is difficult to describe clearly or it is difficult to determine the appearance of unqualified defects, the customer shall provide the acknowledged sample and illustrative pictures for inspection as a basis.
Inspection/test environment
CASEASE
1 m to 1.5 m
30 to 45 degrees
500 ~ 1000 LUX
Visual distance: 30 cm
Indoor temperature: 25℃±5℃
Brightness: 500 ~ 1000Lux
Visual condition: normal visual acuity, 1.0 or above;
(Look back and forth on each surface for 10 seconds)
Position: The product is placed 30cm in front of the inspector, the inspector is 45±15 degrees in the product (that is, the standard sitting position of visual personnel, the machine is placed flat on the workbench); Scanning time: 10 seconds/time/surface
Inspection of hardware
Definition of bad categories
A serious shortcoming
Critical Defect A critical defect which, based on judgment and experience, shows that a dangerous or unsafe result may occur to the person using the product.
The Lord wants something missing
Major Defect refers to a defect other than a serious defect that may result in a defect or defect or substantially degrade the performance of the product so that the desired goal cannot be achieved.
The second point is missing
(Minor
Defect Secondary defect refers to a defect where the product's usability may not substantially reduce the desired purpose or where the defect differs from established standards but has no significant impact on the product's use and operational effectiveness.
List of plastics inspection: (Refer to the rules of judgment for details)
NO. Test fixture for project inspection content
Bad judgment
CRMajMin
1. Defects of appearance inspection (see detailed rules of judgment standard for details) :
Side A: Grade B (≤0.1mm^2)
Two points are allowed on one side, and the distance between points is not less than 100mm.
Side B: Grade C (≤0.2mm^2)
A). Two points are allowed on one side, and the distance between points is not less than 100mm.
B). If the point is less than 0.1mm^2, 3 points are allowed on one side, and the distance between points is not less than 100mm.
C). If any point on one side is greater than 0.1mm^2, it is applicable to project a.
Surface C: D grade (≤0.3mm^2)
A). Two points are allowed on one side, and the distance between points is not less than 50mm.
B). If the point is less than 0.2mm^2, 3 points are allowed on one side, and the distance between points is not less than 50mm.
C). If any point on one side is greater than 0.2mm, it is applicable to item a. Visual inspection, fixture: stain card
Spot defects include: bubbles, stains, paint particles, spotty impurities, paint removal, dents, etc
Thread-like impurities
Side A: length ≤3mm, quantity as above;
Side B: length ≤5mm, quantity as above;
Side C: length ≤8mm, quantity as above. Black mark card
Insensitive scratch (width ≥0.08mm)
Side A: length ≤6mm, quantity as above;
Side B: length ≤12mm, quantity as above;
Side C: length ≤20mm, quantity as above. Black mark card
Sensible scratch (width ≤0.08mm)
Side A: area 0.5mm ^2, the quantity is the same as above;
Side B: area 1.0mm ^2, the quantity is the same as above;
Side C: Area 1.5mm ^2, quantity as above. Black mark card
Raw edge:
Side A ≦ 0.1mm
B side ≦ 0.2mm
Surface C ≦ 0.3mm gauge
Bending deformation:
In general:
LCD BACK allows external convex (not concave),
The HINGE COVER allows both ends to turn up.
But no matter what kind of deformation, its deformation is not more than 3/1000 marble platform, feeler
Art Line:
The separation is required to be clear, and no heterochromatic inspection is allowed in the slot of the art line
2 Dimensions Refer to EER
Key control sizes include :LOGO slot, long and wide LOGO slot sizes of plastic parts must meet the requirements (focus on following up the product return);
The other size is mainly composed of real, pay attention to the gap, break difference problems.
3 Color difference Color difference value: The value must meet ΔE+-1.0
The surface of the paint layer of plastic parts should be smooth, uniform color difference meter, standard color plate
4 Reliability test hardness:
The hardness of the coating layer is measured according to GB/T
In the mechanical method of 6739, the Mitsubishi Uni pencil is about 45° with the horizontal plane, the pressure of the tip is 500g/cm2, and the paint layer of the sample is pushed and pressed, and the speed of about 1cm/s is about 1cm ~ 3cm to scratch on the coating. For each stroke, grind the lead and repeat at least five strokes with the same hardness pencil. Film pencil hardness scratching instrument
The corresponding size of pencil
200 mesh sandpaper
No residual scratches and damage is qualified
Adhesion:
To determine the adhesion of the coating layer, use a sharp utility knife to mark a straight line on the surface of the coating layer at a 1mm parallel distance (cut through the coating at one time) in a checkerboard shape, and make a 3M610-1PK adhesive tape (tensile strength: 5.0)
N/mm; Metal bonding force: 0.5
N/mm; Elongation at break: 15%) tightly attached to the film surface, can be rolled three times with a rubber roller. Place for 30 seconds, and then pull up the stripping adhesive at a speed of 0.6 ~ 1.0m/s at a 90° Angle. Fixture:
Utility knife, hundred box knife
3M610-1PK type adhesive tape
No flake shedding phenomenon is qualified
Resistance to friction:
Use EF74 eraser to wipe 200 cycles with a force of 500g/cm2 and a speed of 50 cycles /min at a distance of 3cm. Fixture :EF74 eraser
Not exposed plastic substrate is qualified
5 Other copper nuts
The height of the copper nut (the distance between the copper nut and the BOSS surface) shall not be higher than that of the BOSS surface and shall be 0.05-0.15mm lower than that of the BOSS surface
It is necessary to pay attention to the occurrence of leakage melting and melting of wrong nuts.
Tension value and torque value of copper nut
M1.6: tension value ≥10kgf, torsion value ≥3kgf;
M2.0: tension value ≥15kgf, torque value ≥4kgf;
M2.5: tension value ≥25kgf, torsion value ≥5kgf; Tension meter, torsion meter
(This test should be performed if PL finds a nut drop event)
The pull torque value varies with the manufacturer. If the EER value is specified, use the EER value
6 Package check whether there is a delivery label, GP label and whether the label content is clear, complete and correct eye inspection
Note whether there are incoming materials before and after mold modification between the same batch
Confirm whether the outsourcing has any damage and collision marks (pay special attention to the four corners)
Whether there are mixed materials, wrong materials, short loading phenomenon
6. List of inspection for hardware (refer to the rules of judgment for any details)
NO. Test fixture for project inspection content
Bad category
CRMajMin
1 Appearance check whether there is dirt, oil stains, oxidation phenomenon visual inspection, do not need to paste, allow the existence of anti-rust oil
Whether the material, thickness and surface treatment process are the same shall be compared with the sample. No difference or slight difference can be accepted
Deformation of stamping parts
After placing the product on the platform, the 4 corners are on the same plane; Or 3 corners of the ground, one corner up ≤1.0mm. Common deformed materials are :HDD support; TP SUPP, etc
The acceptable degree of deformation shall be based on no mechanism interference and no assembly clearance.
Body has no pollution, foreign body, riveting is correct eye inspection
Whether the size is in conformity with the specification (IQC shall check the size marked in the acknowledgement letter, and IQC shall record 6 data for each size of each feed) practical assembly
3 Reliability test salt spray test visual inspection
5% concentration brine immersion test
The test of HINGE is completed by the test department when necessary
4. The supplier shall provide special fixture for measuring when necessary, such as bending Angle and maximum Angle of HINGE
5 Package check whether there is a delivery label, GP label and whether the label content is clear, complete and correct
Note whether there are incoming materials before and after mold modification between the same batch
Confirm whether the outsourcing has any damage or collision marks
There is no mixing material, wrong material, short load
Pre-production Inspection (PPI)
100% inspection (Full Inspection)
When the merchandise is 100% completed, we will check the quality of goods unit by unit, which covers product description, style &color, workmanship, quality, function, label, package, size measurement if available etc, to make sure 100% of the goods meet your specified quality requirement. Note: for those products of high value or complicated internal structure, we suggest to take full inspection.Container Loading Supervision (CLS)
Before loading, our inspector will check products' information, qty, package, during the course of loading, our inspectors will keep closely look at the loading process, ensure that the export cartons are well arranged in the container with no risks of deformation, collapse, help manufacturer finish loading under correct and clear working clauses and working process. In general:Random Inspection
(Pre-production Random Inspection, During Production Random Inspection, Pre-shipment Random Inspection) As per customer's quality requirement, we will sample the products according to international or other standards to inspect the packing, appearance, color, size, function, safety, etc.What do our QC inspectors (quality inspector) do for the inspections ?
1. Confirm the quantity of the products.
2. Confirm the packing detail information of the products.
3. Check the information or marks reqiured by clients, such as the information on the carton, information on gift box, information
on products, warning text and all the others.
4. Check the overall appearance of the product.
5. Check the conmponents of the products.
6. Perform the general tests.
(1) General function test.
(2) Dimension of packing or products.
(3) Gross weight or net weight.
(4) Carton drop test.
(5) Barcode number test.
8. Any other work that clients want us to do during the inspection.
1.Why do I need shipment inspections or factory audits?
In case of any Poor quality, incorrect shipments, unreal information from suppliers. Inspection is the most efficient way to protect buyer’s right.
Getting a rapid quotation should have a complete condition,such as gross weight size,quantity and where is the factory and where will it ship to."
Package testing is mandated by regulations for some products such as; food, pharmaceuticals, medical devices, dangerous goods, etc. This may cover both the design qualification, periodic retesting, and control of the packaging processes. For unregulated products, testing may be required by a contract or governing specification. However, for most consumer goods, package testing is often a business decision involving risk management for factors such as:
• cost of packaging
• cost of package testing
• value of package contents
• value of good will in your market
• product liability exposure
• other potential costs of inadequate packaging
YONGSHUN staff would be happy to assess your specific product and packaging requirements to help you determine whether package testing can improve your quality deliverables.
Prop 65 is the 1986 voter-approved Safe Drinking Water & Toxic Enforcement Act that includes a list of Chemicals known to the State of California to cause cancer and/or reproductive toxicity. If a product contains a listed chemical, then the product must contain a “clear and reasonable” warning label informing consumers of the presence of the chemical and stating the chemical is known to cause cancer, birth defects, or other reproductive harm.
Although companies with fewer than 10 employees are exempt, if they sell a violative product to a retailer with more than 10 employees, the retailer could receive a notice of violation. In these circumstances, retailers usually rely on clauses within their contacts with importers that require the importer take responsibility for the violation.
A plaintiff may seek injunctive relief requiring a company caught selling a violative product to suspend sales, conduct a recall, or reformulate the product. Plaintiffs can also obtain penalties of up to $2,500 per violation per day. A more general California statute allows most successful plaintiffs to recover their attorneys’ fees as well.
Many are now choosing to rely on 3rd party testing companies to verify that hazardous substances are not being used in their products.
The type of quality control inspection you need largely depends on the quality goals you are trying to achieve, the relative importance of quality as it relates to your market, and whether there are any current production issues that need to be resolved.
We invite you to explore all the inspection types we provide by clicking here.
Or, you can contact us, and our staff can work with you to determine your exact requirements, and propose a custom solution to best meet your needs.
AQL is the acronym for Acceptable Quality Limit (or Level). This represents a statistical measurement of the maximum number and range of defects that is considered acceptable during a random sampling inspection of your goods. If the AQL is not achieved for a particular sampling of goods, you may accept shipment of the goods ‘as is’, demand a rework of the goods, renegotiate with you supplier, refuse the shipment, or choose another recourse based on your supplier agreement.
Defects found during a standard random inspection are sometimes classified into three levels: critical, major and minor. Critical defects are those that render the product unsafe or hazardous for the end user or that contravene mandatory regulations. Major defects can result in the product’s failure, reducing its marketability, usability or salability. Lastly, minor defects do not affect the product’s marketability or usability, but represent workmanship defects that make the product fall short of defined quality standards. Different companies maintain different interpretations of each defect type. Our staff can work with you to determine the AQL standard that meets your requirements according to the level of risk you are willing to assume. This becomes the primary reference during a pre-shipment inspection.
It is important to note; the AQL inspection is only a report on the findings at the time of the inspection. YONGSHUN, like all 3rd party QC companies, does not have the authority to make a decision as to whether your goods can be shipped. That is a decision only you can make in consultation with your supplier after reviewing the inspection report.